MantisBT - VTK
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IDProjectCategoryView StatusDate SubmittedLast Update
0001153VTK(No Category)public2004-09-10 06:292016-08-12 09:54
Reporterpra 
Assigned ToBerk Geveci 
PrioritynormalSeveritymajorReproducibilityalways
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Project
Type
Summary0001153: Bug in SetActiveAttribute?
DescriptionDear,

There seems to be a bug in vtkDataSetAttributes when using SetActiveAttribute (int index, int attributeType).


The following works fine (using a name):
  for(i = 0; i < vec_DataArray.size(); ++i)
  {
    sprintf(name, "PCTEST%i", i);

    pPolyData->GetPointData()->SetActiveAttribute(name, vtkDataSetAttributes::VECTORS);

double* d = pPolyData->GetPointData()->GetVectors()->GetTuple3(1);

}

when using a number instead of a name:

  for(i = 0; i < vec_DataArray.size(); ++i)
  {
    sprintf(name, "PCTEST%i", i);

    pPolyData->GetPointData()->SetActiveAttribute(i, vtkDataSetAttributes::VECTORS);

double* d = pPolyData->GetPointData()->GetVectors()->GetTuple3(1);

}

it doesn’t change the active vectorfield.

Best wishes,
Per

PS: Complete c++ test code:

// testAddArray.cpp : Defines the entry point for the console application.
//


#include <iostream>
#include <tchar.h>


#include <vtkPolyData.h>
#include <vtkDataSetAttributes.h>
#include <vtkAssignAttribute.h>
#include <vtkPolyDataReader.h>
#include <vtkPolyDataWriter.h>
#include <vtkDoubleArray.h>
#include <vtkPointData.h>


#pragma comment(lib, "vtkHybrid.lib")
#pragma comment(lib, "vtkIO.lib")
#pragma comment(lib, "vtkGraphics.lib")
#pragma comment(lib, "vtkFiltering.lib")
#pragma comment(lib, "vtkCommon.lib")


using namespace std;

#include <vector>
void main(int argc, _TCHAR* argv[])
{

  vtkPolyDataReader *pReader = vtkPolyDataReader::New();
  vtkPolyData *pPolyData = vtkPolyData::New();
  vtkPolyDataWriter *pWriter = vtkPolyDataWriter::New();
  vector<vtkDataArray* > vec_DataArray;
  int i;
  char name[255];

  pReader->SetFileName("fran_cut.vtk"); // 'fran_cut.vtk' from the vtk test set
  pReader->Update();
  pPolyData->DeepCopy(pReader->GetOutput());

  cerr << "pPolyData->GetNumberOfPoints() = " << pPolyData->GetNumberOfPoints() << "\n";

  // Make vector field
  vec_DataArray.resize(3);
  for(i = 0; i < vec_DataArray.size(); ++i)
  {
    vec_DataArray[i] = vtkDoubleArray::New();

    vtkDataArray* v = vec_DataArray[i];

    sprintf(name, "PCTEST%i", i);
    v->SetName(name);
    v->SetNumberOfComponents(3);
    v->SetNumberOfTuples(pPolyData->GetNumberOfPoints());

    for(int j = 0; j < v->GetNumberOfTuples(); ++j)
    {
      const double d = i + j / 1.e4;
      v->SetTuple3(j, d, d, d);
    }
  }

  // Add vectors to dataset
  //
  // 11111111111111111
  //
  cerr << "..........1st test...........\n";

  cerr << " Shows that many field sets may be added to a dataset.\n";

  pPolyData->DeepCopy(pReader->GetOutput());

  for(i = 0; i < vec_DataArray.size(); ++i)
  {
    pPolyData->GetPointData()->AddArray(vec_DataArray[i]);
  }

  pWriter->SetInput(pPolyData);
  pWriter->SetFileName("fran_cut_with_test_vectors_1.vtk");
  pWriter->Write(); // Write data set with 'FieldData'

  //
  // 22222222222222222
  //
  cerr << "..........2nd test...........\n";

  cerr << " Shows that it's not possible to add more the one vector-attribute to a dataset.\n";

  pPolyData->DeepCopy(pReader->GetOutput());

  for(i = 0; i < vec_DataArray.size(); ++i)
  {
    pPolyData->GetPointData()->SetVectors(vec_DataArray[i]);
  }

  // check that all vectors are in dataset!
  for(i = 0; i < vec_DataArray.size(); ++i)
  {
    sprintf(name, "PCTEST%i", i);

    pPolyData->GetPointData()->SetActiveVectors(name);

    if (pPolyData->GetPointData()->GetVectors()==NULL)
    {
      cerr << "no vector with name '" << name << "'....continue\n";
      continue;
    }

    double* d = pPolyData->GetPointData()->GetVectors()->GetTuple3(1);
    cerr << name << " "
      << d[0] << " "
      << d[1] << " "
      << d[2] << " "
      << "\n";
  }

  pWriter->SetInput(pPolyData);
  pWriter->SetFileName("fran_cut_with_test_vectors_2.vtk");
  pWriter->Write(); // Write data set with 'FieldData'

  //
  // 33333333333333333
  //
  cerr << "..........3rd test...........\n";

  cerr << " Shows how easy field data may be converted/assigned as vector-attribute to the dataset.\n";


  pReader->SetFileName("fran_cut_with_test_vectors_1.vtk");
  pReader->Update();

  pPolyData->DeepCopy(pReader->GetOutput());

  cerr << (pPolyData->GetPointData()->GetVectors() != NULL) << " - should be zero as not vector field is assigned/present\n";

  for(i = 0; i < vec_DataArray.size(); ++i)
  {
    sprintf(name, "PCTEST%i", i);

    pPolyData->GetPointData()->SetActiveAttribute(name, vtkDataSetAttributes::VECTORS);

    double* d = pPolyData->GetPointData()->GetVectors()->GetTuple3(1);
    cerr << name << " "
      << d[0] << " "
      << d[1] << " "
      << d[2] << " "
      << "\n";

    cerr << "just to show that the number also can be used. BUT IT DOESN'T WORK\n";
    pPolyData->GetPointData()->SetActiveAttribute((i+1)%vec_DataArray.size(), vtkDataSetAttributes::VECTORS); // just to show that the number also can be used!

    d = pPolyData->GetPointData()->GetVectors()->GetTuple3(1);
    cerr << (i+1)%vec_DataArray.size() << " "
      << d[0] << " "
      << d[1] << " "
      << d[2] << " "
      << "\n\n";
  }

  //
  // 44444444444444444
  //
  cerr << "..........4th test...........\n";

  cerr << " Shows the same as 3rd test but uses vtkAssignAttribute.\n";

  vtkAssignAttribute* aa = vtkAssignAttribute::New();
  aa->SetInput(pReader->GetOutput());

  for(i = 0; i < vec_DataArray.size(); ++i)
  {
    sprintf(name, "PCTEST%i", i);

    aa->Assign(name, vtkDataSetAttributes::VECTORS,
      vtkAssignAttribute::POINT_DATA); // POINT_DATA: Attribute found in POINT_DATA not cell data
    aa->Update();

    try
    {
      double* d = aa->GetOutput()->GetPointData()->GetVectors()->GetTuple3(1);
      cerr << name << " "
        << d[0] << " "
        << d[1] << " "
        << d[2] << " "
        << "\n";
    }
    catch (...) {cerr << "exception!!!\n";}
  }


#define VTKRELEASE(x) x->Delete()

  VTKRELEASE(pReader);
  VTKRELEASE(pPolyData);
  VTKRELEASE(pWriter);

  for(i = 0; i < vec_DataArray.size(); ++i) VTKRELEASE(vec_DataArray[i]);


    return;
}
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Issue History
Date ModifiedUsernameFieldChange
2011-06-16 13:11Zack GalbreathCategory => (No Category)
2016-08-12 09:54Kitware RobotNote Added: 0036751
2016-08-12 09:54Kitware RobotStatusexpired => closed
2016-08-12 09:54Kitware RobotResolutionopen => moved

Notes
(0036751)
Kitware Robot   
2016-08-12 09:54   
Resolving issue as `moved`.

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